Surface figure metrology for reflective membrane mirrors based on phase-measuring deflectometry
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arXiv
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| Hauptverfasser: | , , , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866908652990889984 |
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| author | Yan, Xin Zhuang, Zhi-Kang Du, Fu-Jia Duan, Wen Yin, Peilin Yu, Mo-Nong Yang, Guang |
| author_facet | Yan, Xin Zhuang, Zhi-Kang Du, Fu-Jia Duan, Wen Yin, Peilin Yu, Mo-Nong Yang, Guang |
| contents | Reflective membrane mirrors provide a lightweight, low-cost alternative to traditional optics for next-generation large-aperture telescopes, but their non-rigid, thin structure poses challenges for surface metrology. We present a phase-measuring deflectometry (PMD) system enhanced with tailored ray-tracing and iterative reconstruction to enable non-contact measurement of large membrane optics. The system successfully characterizes the surface figure and evaluates the dynamic stability of a 1-meter Hencky-type membrane mirror. Our results demonstrate the effectiveness of PMD as a practical metrology tool for future membrane-based telescope systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_11049 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Surface figure metrology for reflective membrane mirrors based on phase-measuring deflectometry Yan, Xin Zhuang, Zhi-Kang Du, Fu-Jia Duan, Wen Yin, Peilin Yu, Mo-Nong Yang, Guang Instrumentation and Methods for Astrophysics Optics Reflective membrane mirrors provide a lightweight, low-cost alternative to traditional optics for next-generation large-aperture telescopes, but their non-rigid, thin structure poses challenges for surface metrology. We present a phase-measuring deflectometry (PMD) system enhanced with tailored ray-tracing and iterative reconstruction to enable non-contact measurement of large membrane optics. The system successfully characterizes the surface figure and evaluates the dynamic stability of a 1-meter Hencky-type membrane mirror. Our results demonstrate the effectiveness of PMD as a practical metrology tool for future membrane-based telescope systems. |
| title | Surface figure metrology for reflective membrane mirrors based on phase-measuring deflectometry |
| topic | Instrumentation and Methods for Astrophysics Optics |
| url | https://arxiv.org/abs/2511.11049 |